卵石层后压浆灌注桩承载力设计及试验分析
Structural Engineers（2008）
Abstract
通过某工程3组采用后压浆技术的钻孔灌注桩静载荷试桩结果,得到了各组试桩的Q-S曲线,并将试验结果与经验公式估算值进行了比较,同时采用解析法拟合试桩Q-S曲线.预测桩实际最大承载力理论值;验证了后压浆钻孔灌注桩承载力可以通过经验公式进行估算;验证了桩实际最大承载力可以通过解析法拟合进行预测.应用的经验公式及其计算参数可供同类地质后压浆钻孔灌注桩的设计参考.
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Key words
post grouting technique,theoretical calculation,cobble layer,test analysis,bored pile,fitting by analytic method
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